Figure 4

Compared with pre-EA, the radioactivity uptake in the stomach was significantly increased during 2 Hz-EA. The up-regulation escalated gradually and did not reach the peak until 180 minutes after the EA. The stomach uptake started to decrease 3 hours after 2 Hz EA at ST 36. 100 Hz-EA appeared to induce more radioactivity uptake than did 2 Hz EA in the stomach; however, no significance was reached in comparison of the two groups. Compared with radioactivity uptake in the stomach during EA, *p < 0.05, **p < 0.01, Two-way ANOVA followed by Duncan post hoc tests.